3 years ago

Jill says that 12.6666666 is less than 12.63 explain Her error

1 answer:

7 0

Look at the last number in the decimal.

12.66
12.63

Compare 6 and 3. 6 is larger so therefore 12.6666666 is larger. (You also need to compare the tenths place too, but these happen to have the same tenths place, .6.

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What is the approximate length of arc s on the circle below? Use 3.14 for

ryzh [129]

The length of arc is 69.1 feet

Solution:

The length of arc when angle given in degrees is given as:

$Arc\ length = \frac{ \theta }{360} \times 2 \pi r$

Where,

r is the radius

$\theta$ is the central angle in degrees

From given,

$r = 12\ feet\\\\\theta = 330^{\circ}$

Substituting the values we get,

$Arc\ length = \frac{ 330 }{360} \times 2 \times 3.14 \times 12\\\\Arc\ length = \frac{ 330 }{360} \times 6.28 \times 12\\\\Arc\ length = 69.08 \approx 69.1$